gcc/testsuite/gcc.dg/uninit-pr112909.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wuninitialized" } */
   3
   4 struct machine_thread_all_state {
   5   int set;
   6 } _hurd_setup_sighandler_state;
   7 int _hurd_setup_sighandler_ss_0;
   8 struct {
   9   int ctx;
  10 } *_hurd_setup_sighandler_stackframe;
  11 void _setjmp();
  12 void __thread_get_state();
  13 int machine_get_basic_state(struct machine_thread_all_state *state) {
  14   if (state->set)
  15     __thread_get_state();
  16   return 1;
  17 }
  18 int *_hurd_setup_sighandler() {
  19   int *scp;                             /* { dg-bogus "used uninitialized" } */
  20   if (_hurd_setup_sighandler_ss_0) {
  21     _setjmp();
  22     _hurd_setup_sighandler_state.set |= 5;
  23   }
  24   machine_get_basic_state(&_hurd_setup_sighandler_state);
  25   scp = &_hurd_setup_sighandler_stackframe->ctx;
  26   _setjmp();
  27   return scp;
  28 }